Home / 6,781.51-9,342.30-5,578.66

Finding the Fourth Proportional to 6,781.51, 9,342.30 and 5,578.66

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Solution

The fourth proportional to 6,781.51, 9,342.30 and 5,578.66 is: 7,685.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.51 : 9,342.30 = 5,578.66 : x
  2. Step 2: Convert to fraction form
    6,781.51/9,342.30 = 5,578.66/x
  3. Step 3: Cross multiply
    6,781.51x = 9,342.30 × 5,578.66
  4. Step 4: Simplify right side
    6,781.51x = 52,117,515.32
  5. Step 5: Solve for x
    x = 52,117,515.32/6,781.51
  6. Step 6: Final answer
    x = 7,685.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.